1861346448 has 60 divisors (see below), whose sum is σ = 5609897020. Its totient is φ = 572721408.

The previous prime is 1861346387. The next prime is 1861346453. The reversal of 1861346448 is 8446431681.

1861346448 is a `hidden beast` number, since 186 + 1 + 3 + 464 + 4 + 8 = 666.

1861346448 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 725117184 + 1136229264 = 26928^2 + 33708^2 .

It is a super-2 number, since 2×1861346448² = 6929221198964433408, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 495283 + ... + 499026.

Almost surely, 2^1861346448 is an apocalyptic number.

1861346448 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1861346448 is an abundant number, since it is smaller than the sum of its proper divisors (3748550572).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1861346448 is a wasteful number, since it uses less digits than its factorization.

1861346448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 994336 (or 994327 counting only the distinct ones).

The product of its digits is 442368, while the sum is 45.

The square root of 1861346448 is about 43143.3244894271. The cubic root of 1861346448 is about 1230.1056264635.

The spelling of 1861346448 in words is "one billion, eight hundred sixty-one million, three hundred forty-six thousand, four hundred forty-eight".